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authorAdam Ford <aford173@gmail.com>2018-05-18 23:33:35 +0300
committerSekhar Nori <nsekhar@ti.com>2018-06-18 17:50:03 +0300
commit8ae024497b3d68165e692d6ad5ba149cd070dac2 (patch)
tree7a4f67e869b5f4f4b27ee2d445fac44db25b6b8b /arch/arm/boot/dts/da850-evm.dts
parent4be9e673298fb4d204c6d4c782c800ec6d17d0c6 (diff)
downloadlinux-8ae024497b3d68165e692d6ad5ba149cd070dac2.tar.xz
ARM: dts: da850-evm: Enable LCD and backlight
When using the board files the LCD works, but not with the DT. This adds enables the original da850-evm to work with the same LCD in device tree mode. The EVM has a gpio for backlight regulator and a PWM for dimming the backlight. The LCD and the vpif display pins are mutually exclusive, so if using the LCD, do not load the vpif driver. Signed-off-by: Adam Ford <aford173@gmail.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'arch/arm/boot/dts/da850-evm.dts')
-rw-r--r--arch/arm/boot/dts/da850-evm.dts83
1 files changed, 82 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
index 743af2b6a5ce..e49d71100c15 100644
--- a/arch/arm/boot/dts/da850-evm.dts
+++ b/arch/arm/boot/dts/da850-evm.dts
@@ -27,6 +27,65 @@
spi0 = &spi1;
};
+ backlight: backlight-pwm {
+ pinctrl-names = "default";
+ pinctrl-0 = <&ecap2_pins>;
+ power-supply = <&backlight_lcd>;
+ compatible = "pwm-backlight";
+ /*
+ * The PWM here corresponds to production hardware. The
+ * schematic needs to be 1015171 (15 March 2010), Rev A
+ * or newer.
+ */
+ pwms = <&ecap2 0 50000 0>;
+ brightness-levels = <0 10 20 30 40 50 60 70 80 90 99>;
+ default-brightness-level = <7>;
+ };
+
+ panel {
+ compatible = "ti,tilcdc,panel";
+ pinctrl-names = "default";
+ pinctrl-0 = <&lcd_pins>;
+ /*
+ * The vpif and the LCD are mutually exclusive.
+ * To enable VPIF, change the status below to 'disabled' then
+ * then change the status of the vpif below to 'okay'
+ */
+ status = "okay";
+ enable-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>; /* lcd_panel_pwr */
+
+ panel-info {
+ ac-bias = <255>;
+ ac-bias-intrpt = <0>;
+ dma-burst-sz = <16>;
+ bpp = <16>;
+ fdd = <0x80>;
+ sync-edge = <0>;
+ sync-ctrl = <1>;
+ raster-order = <0>;
+ fifo-th = <0>;
+ };
+
+ display-timings {
+ native-mode = <&timing0>;
+ timing0: 480x272 {
+ clock-frequency = <9000000>;
+ hactive = <480>;
+ vactive = <272>;
+ hfront-porch = <3>;
+ hback-porch = <2>;
+ hsync-len = <42>;
+ vback-porch = <3>;
+ vfront-porch = <4>;
+ vsync-len = <11>;
+ hsync-active = <0>;
+ vsync-active = <0>;
+ de-active = <1>;
+ pixelclk-active = <1>;
+ };
+ };
+ };
+
vbat: fixedregulator0 {
compatible = "regulator-fixed";
regulator-name = "vbat";
@@ -35,6 +94,15 @@
regulator-boot-on;
};
+ backlight_lcd: backlight-regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "lcd_backlight_pwr";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&gpio 47 GPIO_ACTIVE_HIGH>; /* lcd_backlight_pwr */
+ enable-active-high;
+ };
+
sound {
compatible = "simple-audio-card";
simple-audio-card,name = "DA850/OMAP-L138 EVM";
@@ -63,6 +131,10 @@
};
};
+&ecap2 {
+ status = "okay";
+};
+
&pmx_core {
status = "okay";
@@ -113,6 +185,10 @@
status = "okay";
};
+&lcdc {
+ status = "okay";
+};
+
&i2c0 {
status = "okay";
clock-frequency = <100000>;
@@ -340,5 +416,10 @@
&vpif {
pinctrl-names = "default";
pinctrl-0 = <&vpif_capture_pins>, <&vpif_display_pins>;
- status = "okay";
+ /*
+ * The vpif and the LCD are mutually exclusive.
+ * To enable VPIF, disable the ti,tilcdc,panel then
+ * change the status below to 'okay'
+ */
+ status = "disabled";
};